Talk to the academic counselor at the school where you earned your BA. Post-bacc degrees in Psychology begin to narrow the focus of the studies (industrial psychology, child psychology, research, marriage counseling) so you want to choose a program that heads you in the right direction for licensing and certification. After you take the GRE and apply to grad school, you may be able to develop a plan that allows you to construct a program that will continue through dissertation, thus granting an MA and PhD.